<template>
  <div class="login-container">
    <div class="left">
      <div class="title-box">
        <img src="@/assets/img/login_icon.png" alt="" />
        <div class="title">黑马面面</div>
        <div class="line"></div>
        <div class="sub-title">用户登录</div>
      </div>
      <el-form
        :model="ruleForm"
        :rules="rules"
        ref="ruleForm"
        class="login-form"
      >
        <!-- prop的两个作用，清空和校验 -->
        <el-form-item prop="phone">
          <el-input
            prefix-icon="el-icon-user"
            v-model="ruleForm.phone"
            placeholder="请输入手机号"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            prefix-icon="el-icon-lock"
            v-model="ruleForm.password"
            placeholder="请输入密码"
            show-password
          ></el-input>
        </el-form-item>
        <el-row :gutter="10">
          <el-col :span="16">
            <el-form-item prop="code">
              <el-input
                prefix-icon="el-icon-key"
                v-model="ruleForm.code"
                placeholder="请输入验证码"
              ></el-input>
            </el-form-item>
          </el-col>
          <el-col :span="8">
            <img
              style="width:100%;height:40px;"
              :src="loginCaptchaUrl"
              alt=""
              @click="changeLoginCaptchaUrl"
            />
          </el-col>
        </el-row>
        <el-form-item prop="checked">
          <!-- `checked` 为 true 或 false -->
          <el-checkbox v-model="ruleForm.checked"></el-checkbox
          >&nbsp;我已阅读并同意
          <el-link type="primary" href="http://www.baidu.com" target="__blank"
            >用户协议</el-link
          >
          和
          <el-link type="primary" href="http://www.jd.com" target="__blank"
            >隐私条款</el-link
          >
        </el-form-item>
        <el-form-item>
          <el-button type="primary" style="width:100%;" @click="login"
            >登录</el-button
          >
        </el-form-item>
        <el-form-item>
          <el-button
            type="primary"
            style="width:100%;"
            @click="$refs.registerRef.dialogVisible = true"
            >注册</el-button
          >
        </el-form-item>
      </el-form>
    </div>
    <div class="right">
      <img src="@/assets/img/login_bg.png" alt="" />
    </div>
    <register ref="registerRef" />
  </div>
</template>

<script>
import register from './register'
// 按需导入
import { saveToken } from '@/utils/token'
export default {
  name: 'login',
  components: {
    register
  },
  data () {
    return {
      loginCaptchaUrl: process.env.VUE_APP_BASEURL + '/captcha?type=login', // 验证码的地址
      ruleForm: {
        // 属性名来自后台接口文档
        phone: '18511111111',
        password: '12345678',
        code: '',
        checked: true // 是否勾选
      },
      rules: {
        phone: [
          {
            required: true,
            validator: (rule, value, callback) => {
              // rule：规则对象，一般不用它
              // value：就是输入的值
              // callback：决定校验成功还是失败，如果失败 callback(new Error('错误提示'))，成功 callback()，无论成功还是失败都要调用
              if (!value) {
                return callback(new Error('手机号不能为空'))
              }

              const reg = /^1[3456789][0-9]{9}$/
              if (!reg.test(value)) {
                return callback(new Error('手机号不合法'))
              }

              // 一定要调用callback，否则登录按钮就不起效
              callback()
            },
            trigger: 'blur'
          }
        ],
        password: [
          { required: true, message: '密码不能为空', trigger: 'blur' },
          {
            min: 6,
            max: 16,
            message: '密码长度在 6 到 16 个字符',
            trigger: 'blur'
          }
        ],
        code: [
          { required: true, message: '验证码不能为空', trigger: 'blur' },
          {
            min: 4,
            max: 4,
            message: '验证码长度必须是4位',
            trigger: 'blur'
          }
        ],
        checked: [
          {
            required: true,
            validator: (rule, value, callback) => {
              value ? callback() : callback(new Error('必须勾选用户协议'))
            },
            trigger: 'change'
          }
        ]
      }
    }
  },
  methods: {
    changeLoginCaptchaUrl () {
      // console.log('----changeLoginCaptchaUrl---')
      this.loginCaptchaUrl =
        process.env.VUE_APP_BASEURL + `/captcha?type=login&t=${new Date() - 0}`
    },
    login () {
      // 全部校验
      this.$refs.ruleForm.validate(async valid => {
        // console.log('valid-----', valid)
        if (!valid) return

        // 发请求（响应拦截器中，把返回结果进行简化）
        const res = await this.$axios.post('/login', this.ruleForm)

        if (res.code === 200) {
          this.$message.success('登录成功~')

          // 保存token
          // localStorage.setItem('heimamm67-token', res.data.token)
          saveToken(res.data.token)

          // 跳转
          this.$router.push('/layout')
        } else {
          // 失败
          this.$message.error(res.message)

          // 刷新验证码
          this.changeLoginCaptchaUrl()
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
.login-container {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-around;
  background: linear-gradient(225deg, #1493fa, #01c6fa);
  .left {
    width: 478px;
    height: 550px;
    background: #f5f5f5;
    padding: 48px;
    .title-box {
      display: flex;
      align-items: center;
      img {
        width: 22px;
        height: 17px;
        margin-right: 16px;
      }
      .title {
        font-size: 24px;
        margin-right: 14px;
      }
      .line {
        width: 1px;
        background-color: #c7c7c7;
        height: 27px;
        margin-right: 12px;
      }
      .sub-title {
        font-size: 22px;
      }
    }
    .login-form {
      margin-top: 29px;
    }
  }
}
</style>
